Share-Based Compensation (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 25, 2011	Jun. 26, 2010	Jun. 25, 2011	Jun. 26, 2010
Total income tax benefit recognized in the income statement for share-based compensation arrangements	$ 1,300,000	$ 1,300,000	$ 3,400,000	$ 2,300,000
Pre-tax compensation expense	3,300,000	3,300,000	8,700,000	5,900,000
Risk-free interest rate			2.03%
Expected life, in years			4.5
Expected stock price volatility			64.74%
Aggregate intrinsic value for outstanding stock options	2,700,000		2,700,000
Aggregate intrinsic value for exercisable stock options	1,600,000		1,600,000
Company granted stock options			1,034,300
Stock Options [Member]
Pre-tax compensation expense	2,600,000	1,300,000	5,500,000	2,400,000
Remaining compensation expense to be recognized			14,400,000
Restricted Stock [Member]
Pre-tax compensation expense	700,000	2,000,000	3,200,000	3,500,000
Remaining compensation expense to be recognized			$ 5,200,000